Stupid question time from yours truly.
My best peak flow so far (and I'm still doing the regular readings for the asthma nurse to diagnose) is 410. That is an evening reading when it should be at its best anyway. I've had a run of really good days and have been able to get on and do most things without any symptoms.
But today I feel breathless and so, so tired yet my peak flow this morning was one of my best yet at 390 for a morning reading.
Can you feel rubbish and still have a good peak flow? Doesn't make sense to me if you can but I'm no expert!
Any input someone?